Heat olive oil in a large heavy-bottom pot over medium-high heat. Add the onion, bell pepper, and celery and cook for 8-10 minutes until the vegetables soften. Add garlic and butter and cook for about 1 minute, or until fragrant.,
STEP 2
Add flour and stir to coat the vegetables until no longer visible.,
STEP 3
Add the broth, potatoes, corn, thyme, bay leaf, smoked paprika, salt and pepper, and bring to a boil.,
STEP 4
Reduce heat to a simmer and cook uncovered until potatoes are tender and broth has thickened, about 25 minutes, stirring occasionally.,
STEP 5
Remove the bay leaf and transfer about 3 cups of the soup and the Greek yogurt to a high-speed blender and process until smooth. Take care when blending hot liquids as they will expand as they mix. You can also use an immersion blender.,
STEP 6
Return the pureed soup to the pot and stir to combine. Serve the chowder with green onions and an extra spoonful of Greek yogurt, if desired.